S-90087A902 3/8"-16 x 1/2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Efficient thread cutting action with Type F design creates precise mating threads in various materials without pre-tapping
• Enhanced driving stability through Phillips No. 4 drive system, reducing cam-out and improving installation efficiency
• Versatile material compatibility specifically engineered for aluminum, brass, cast iron, and sheet metal applications
• Reliable coarse thread engagement with UNC 3/8"-16 configuration provides strong holding power in softer materials
• Optimized blunt tip design ensures proper seating and reduces material displacement during installation
• Full threading along 1/2" length delivers maximum thread contact for superior pull-out resistance

Professional Applications & Engineering Value

These zinc-plated steel tapping screws with Type F thread cutting capability solve critical fastening challenges in metal fabrication and assembly operations. The 3/8"-16 UNC coarse thread configuration combined with thread cutting design eliminates the need for separate tapping operations, significantly reducing installation time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The Phillips No. 4 drive ensures secure tool engagement during high-torque installation, while the fully threaded design provides consistent clamping force across the entire fastened joint. Engineered for production environments, these screws deliver reliable performance in automotive components, electrical enclosures, machinery frames, and structural assemblies where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

These tapping screws feature precise UNC 3/8"-16 coarse thread with Class 2A tolerance, 1/2" length, and 0.375" thread diameter. Manufactured to ASME B18.6.3 specifications and compliant with SAE J933 standards, ensuring dimensional accuracy and performance reliability. The screws are designed for use with R drill bit (0.339" diameter) and feature fully threaded construction with standard pan head profile. Materials and manufacturing processes comply with industry standards for consistent quality and performance in industrial fastening applications.